Fast Math Trick

[NoobHunterHalo]

WHAT KIND OF SORCERY IS THIS

[WongZZ98]

you the man

[PeacePrincess109]

Damn

[TheFAmeAngel]

My answer was very close to the answer and thanks dude. And the method I really used was:

[LIUMEGNLAN]

wow it's so ture that brainy is the new SEXY!!

[MalcolmHeardSB]

Awsome video but the square root of 16 isnt the square root of 4, 4 is the square root of 16

[Khaltazar]

My guess was 10016. Darn was only 800 off haha.

[SUONIndustry]

thank u thank u i don't need calculator anymore.

[SUONIndustry]

u sound like indian, but i like u

[hudanurul800]

I CAN DO IT!! WOHOOO

[TTPlayer298]

You are sooooooooo smart...

I feel soo much smarter my brain hurts...

I love this.

[Lilaaymaafi]

HAHA I DID IT LOLS

[muh1h1]

all 30 videos - *subscribe button* - 11 videos

xD

laugh my ass of xD

[Sanguinej3s3]

(x+y)^2 = x^2 + 2xy + y^2 is all you need. This is an elementary school trick, not something you should be proud of to discover lol.

[guhanable]

hey and plz change the title to maths trick its not math...

no offense

[adityamudgal0]

;-)



[hiperson641]

@glad2teach what are the restrictions to this rule? is there a certain number that i can't go below or above when using this rule? by the way, thank you for these videos, they are very helpful :)

[kutku1000]

WHAT THE ****

[CobaltO18]

really smart

[camrynandcici]

he sounds really really boring i wish he would sound exciting

[abdirashid9]

U trap me to go to INDIA and learn Mathematics, with low paid teacher.. who's more genius than my Math professor

[Garykelleher123]

This guy sounds like the guy who tries to sell me computer virus's over the phone

[Kamineru73]

oh wow I did it, and how do i take so long on tests again? oh yeah THEY'RE BORING >:C leisure math is more fun :3

[glad2teach]

Leisure Math !! ... I liked that terminology.

Shahryar (Glad2teach)

[Chamillionaire993]

Man this is stupid it only aplies to certain numbers. Try 67 or what ever it doesnt add up.

[glad2teach]

Dear Chamillionaire993, I use just 2 EasyCal techniques to perform all my multiplication mentally.

1) Base Multiplication

2) Rainbow Multiplication

If the given number is far from any Base then of course you need to use Rainbow Multiplication.

See the Video Response I have attached below. Incidently I was given the number 67 to multiply mentally in a Live Seminar ( see the video below )

Shahryar (Glad2teach)

[guhanable]

@glad2teach aint u tired of being nice?

even when ppl dont behave the same wid u...

i like that friend

anyway how r u doing ??

[Sanguinej3s3]

@Chamillionaire993 Just do the (70-3)^2 = 70^2 - 2*70*3 + 3^2

[TheExcalibur356]

Does this applies to 120 and up?

[skyesnowflakes]

You're my hero! :D

[ivanxdxd2008]

so this is some indian kamasutra of math.

[hammas74]

realy dont help with 45^2 or other smalls

[glad2teach]

Dear hammas74, to see how to square the numbers near Base 50, see the 2nd video on Glad2teach website ( link below the video above ).

45^2

45 is at a distance of (minus) 5 from Base 50.

So subtract that from 25, you get 20 _ _ ( you get first two Answer digits )

Now for the last 2 Answer digits, simple write the square of that distance (minus) 5

That is 25

So the final Answer of 45^2 = 2025 ( Ins't that easy !! )

Shahryar ( Glad2teach )

[SkiBum224]

@glad2teach I learned squaring numbers that end in 5 i think just as easy. Example - 85^2. Since it ends in 5, the last 2 digits are always going to be 25, the first 2, you just mulitply the number by 1 number higher. So 8x9 is 72, and there you have it, 7225.

[HippyVeterano]

FUCK MATHS!!!!!!!!!!!!!!!

[ludwigchopin]

awesome!

[avukoch]

EXAMPLE

 (105)^2=11025 X=105 D=105-100 =5 X^2=100(105+5)+(5^2)=11000+25= 11025

[avukoch]

The solution is "X = [100(X+D)]+(D^2)"

X is the number that you want to sqaure

D = X - 100 , D is how many X different from 100

[guthiks]

its not fast when ur retarded -.-

[IndighostOfficial]

Haha this is awesome

[NERD9054]

@bulmer69JR Whatsort of exams? GCSE or Higher? Sorry, just interested :)

[bulmer69JR]

I'm failing math and going into exams I'm so fucking scared

[Seerofderp]

Sounds Asian. Must be legit. I'll keep watching these.

[whathebuck1]

once you have done this, you can have a free slurpee.

[jhorne18]

This is the way they really should be teaching math, rather than the old inefficient tabular methods. Here, too, you are learning the principle of logarithms and putting them to use, a concept that really is learned early on in the game, but the kids aren't taught so.

[pqvimana]

@jhorne18 You are so right!!! I'm really impressed by all this knowledge. I can not emphasize enough how grateful I am for it!!!

[REDluckyMAN]

How to do math the easer way( pluses)

709

+

20

---

909

[pinky93rocksm]

@ 2:43 how do you know if your going 2 do two number instead of one number adding the 112

and how do i know which number do i subtract it 3:45

[X0RPION]

@pinky93rocksm the reason you know that you have to add 2 additional digits, even if your starting under 100, is your equasion is being based off of the number 100. there are 2 additional digits after the primary, therefore you add 2 additional digits when you multiply. 2 x 2 = 4. just like if you went to use 1000 as a base instead, you would add an additional 3 digits. because 3 zeros. 3 x 3 = 6.

hope this was helpful XD

[pinky93rocksm]

@X0RPION thnx it's all clear now

[mihy27]

thank you, come again !!! ahahahaha

[DRZautomedia]

This is good and helpful. Thanks! :D

[A08041988]

give me your address. I'd like to send you some pie, rounded to as many digits as possible =D

[MisterSoulless]

thanks a ton for taking the time to teach this.

[LimeyThunder]

my question i bet you cant solve:

why dont they teach this in schools, the world would be so much better equiped

[LimeyThunder]

ohhh my gawd, ive found the ghandi of maths

[X0RPION]

@LimeyThunder referencing god and ghandi in the same sentence... for shame.

[waldemarrrrr]

what about (82)^2 ?

[AumSinisterJ]

@waldemarrrrr

Try 82*10 = 820*8 = 6560 + (82*2=164) = 6724

[hamza4537]

thank you so mach

[08star80]

Vedic Mathematics..........i had took class regarding this..referring vedic maths books in my school life......good

[EvilBharathy]

@nisoes92 ahh, i see now, thanks :)

[EvilBharathy]

would this work for (115)? ive been trying but its not working

[nisoes92]

@EvilBharathy yes it works, 115 + 15 = 130, 100--> 2 zeros, so 2 numbers to go after 130. 15*15=225. since this number has 3 digits the first one is added to the last digit of the first number (so 130 becomes 132) and the 25 becomes after that, so it becomes 13225.

I hope I am explaining this the right way :)

[xThorProductionsx]

There's an easier way I think (not sure if I understood what he did there):

(104)^2=(100+4)^2=100^2 + 2*100*4 + 4^2 = 10000 + 800 + 16 = 10816

[Mrsniper8000]

ne da 10816

[3salman1]

Awesome man i want to throw my calculator man its so easy thnx uploader

[kendambu]

i actually did in the 5 seconds... just saying

[daddiekewl]

You Are Really The beST !!! Else All Sucks Infront of you..... Guys Just are So Selfish they dont want to share there secrets but .....I M Speechlesss.!!!!!

[glad2teach]

Thanks !! If one is really keen to acquire knowledge then all the hurdles can be overcome.

All the Best - Shahryar ( Glad2teach )

[ninjaneil13]

I was just wandering, for what range of numbers your idea works?

It seems as if with number 50 and below you get a negative answer, but i don't know if there is a different cut off point for which this idea works.

[InterwebCat]

(.Y.)=80085

[LivingDead53]

for squaring, you can also do this: 3^2=9 sqr9 3 3+4(next number)=7 9+7=16 or 4^2. If you know the one prior, you can do this even faster.

[LivingDead53]

I found one to share with you since you're so good at these.

[1989Firecracker]

Great video! And fuck niggers they are too stupid to do math!!!

[PianoKwanMan]

1 squared? = -999801. Wow a number squared equals a negative

[MrAman707]

it only works for numbers close to a 100 though but brilliant video, could get into oxford by watching them lol :)

[Luistervink]

@MrAman707 Im not really a math guy or something, but if you have 48, (you can do 50*50 = 2500) 50-48 = 2, so 23__, and 2*2 is 04 = 2304. For 47: 50-47=3, 25-3 = 22__ and then plus 3*3 = 2209. Seems to work :).

[MrAman707]

@Luistervink true thats pretty ingenuous:)

[stylianyt]

I always thought of these tricks a waste of time. I calculated using good old multiplication in parts and addition in about 3 sec. And using this techinique one can do any number multiplications rather being limited by a surtain range or squres plus you don't have to memorise all those tricks and after a while your brain becomes acustomed to doing multiplications that you improve your calculating speed and your internal visualisation skills both essential for math. So don't waste yourtime people

[SzlampStudios]

It's algebra without letters.

(100+4)*(100+4)

100*100+100*4+100*4+4*4

10,000 + 400 + 400 + 16

10,816

(took me 3 seconds mentally)

[EminemEsteem]

You are from India right?

[MrAman707]

@EminemEsteem i think he is from pakistan

[akstevesteve]

superb ..

[ArjayBlogs]

For 2-digit numbers, instead of using bases as a means of calculation what do you feel about the technique ab^2 = (a^2) (b^2) (not multiplication simply placing the 2 answers alongside) + the sum of (a+b)x2

[gufreter]

Wow this is cool

[smallshorts1]

Another nice trick is taking an example like 23x17. Add the numbers used and halve them, getting to the average (20). Then find the common difference between the initial numbers and the found average (3). You will then find that 17x23 is infact (20^2)-(3^2)=391

24x16=(20^2)-(4^2)=384

etc...

You can even mix the methods together. 28x36=(32^2)-(4^2)=900+62x2-16­=1008

[smallshorts1]

so 23^2=20^2+43x3=529

32^2=30^2+62x2=1024

67^2=70^2-137x3=4489

etc...

[smallshorts1]

put more simply, there will be 6 number (twice the difference between 23 and 20 averaging (23+20)/2. Cancelling down gives and generalising leaves us with the number you start with(20) + the number you want(23) multiplied by the difference. This is the difference between 20 squared and 23 squared which when you have a grasp of it is much quicker than the standard way and completely general.

[smallshorts1]

This can be done with any square numbers near to square numbers you know the answers to, or are easier to figure out. For example 20x20 is 400. To get to 21x21 you need to add 20 (making 20X21) then add 21 (so that there is 1 more 21 making 21x21). To get to 22x22 you add the same principle, adding 21 to get to 22x21 then adding 22. The pattern emerging would is that to get to another number (say 23x23 from 20x20) that you add 20+21+21+22+22+23,

[StalkerPoul]

Violets are blue

Roses are red

in SovietRussia math tricks you

[dasten123]

AWESOME!! :)

[BronzeOrwin]

What about something like 14 x 105? I will watch more of your videos, in hopes that you have more on stuff like this. (:

[FoXtr0t194]

To the people who don't understand why it works:

(104)^2 = 100*104 + 4*100 + 4*4

100*104=10400

4*100=400

4*4=16

10400+400+16=10816

I don't have an explanation, because my English is very bad. Lucky for us math is an international language and almost everybody understands the basics of it.

[gowthamn141]

@FoXtr0t194 No matter is not that how it works,but it works,That's enough...

any way thanks for finding it...

[XmetallicaaaaX]

It's Over 9000!!!!!!!!!

[maribeltxcity]

Ur very smart

[aydol23]

i just found out that "I LIKE TO MOVE IT MOVE IT" you the best sir.... amazing

[FREEvRUN]

Math has ruined my life.

[nicoeste8765]

I did work it out in five seconds! I am not joking, I contain this specific mathemathical talent....

[glupsamja]

Where is the next episode for cubes?

[mIlLiOnX10]

this guy knows the answer to √(-1) 

[janb17]

I found out that answer in four sec without any trick

[Gazzer96]

Thanks for the knowledge, but I don't think this sort of thing would be in my exam...

[davidnemat]

thank u

[angenogu]

so whats (103)high2 ?

[NostalgicnoZeleno]

@angenogu , 10 3*2 3high2 = 10609

=)

[rozaykalifa93]

Very smart

[NinjaPri]

You rule Dude...

[wackyLegends]

I found how to do that when the number is with fore digits (1004).

Basically you do it the same way but....

So (1004) squared is 1008016 , you add this 0 but i am no quite sure why ;/

[glad2teach]

@wackyLegends , You got it right !! That extra 0 comes as for 1004 the Base is 1000 ( it has 3 zeros thus 3 places to go )

[wackyLegends]

@glad2teach

aw thanks !

[itsallrighttobeafool]

Can we use this trick on every number? I took two random numbers (29 and 84) and it didn't work or is it just me?

[DanandDonna1]

i love your enthusiasm for math. This subject I can never understand and never will. Parents didn't care much to help and when one of my parents tried to help, she ended up screaming her head off, day after day because I don't GET it. Asked teachers and was lucky to get a minute with them. The school system failed me back then, 40yrs. ago, and doing worse now. That's where it lies.

[glad2teach]

@DanandDonna1 , thanks for pouring your heart out while writing your comment. Math if learnt the right way fills you with pure excitement and tranquility at the very same time. I wish to take you and other people who are struggling with Mathematics into the magical world of numbers. A guided tour till Infinity and back. Once the human mind gets the real taste of Mathematics then it keeps craving for more. Math is the workout for your brain ... it is addictive .

[LaPiNcHiPiTa]

@glad2teach i second that .... math is addictive when you understand it and you want more out of it. Also, TEACHING math is another one of my addictions!! Thanks so much for all the shortcuts!!! keep them coming :-P

[pattyawesome]

Awesome technique! ^__^ By the way I love Indian food, and my math teacher's also an Indian.

P.S. The children in the world are also suffering from not enough pocket money

I miss spelled Indian, my bad!!

[pattyawesome]

Awesome technique! ^__^ By the way I love Indian food, and my math teacher's also an India.

P.S. The children in the world are also suffering from not enough pocket money

[nekosama23]

This is amazing sir! thank you very much for sharing these techniques :D

[ayankit37]

best hai bro

[will9630]

Counting Inventory at 7-11

[ZabieF]

NO! the true secrate is to eat lots of CURRY to get smart :D.

Joking.

Thanks

[DeenaDianna]

Wow thx!!!

[smartinez020]

Awesommm!!!!!

[fullbloodedmexican]

The square root of 69 is 8 something right? Cuz ive been trying to figure out ooh ;)

[hitmeflapme]

Ur a wizard harry!

[victordj50]

You need to know math to sell drug dumbass

[GIGGATY1]

He just said squared not square root dumb ass

[ryanianjames]

Square root of 4 is 2 ... not 16. 4 SQUARED is 16

[thomaslefeuvre1]

I find this method easier:

(104)^2=(100+4)(100+4)=10000+4­00+400+16=10864

It works efficiently for numbers close multiples of 10, but better for close to 50, better for close to 100 etc.

99x99=(100-1)(100-1)=10000-100­-100+1

[Ashyey]

you accent is awesome... idk why it just makes me smile hehehe

[meritonb1]

fuck it, I sell drugs

[MrGooglier]

your voice reminds me one of the character in the movie, 3 Idiots as Chatur. haha

[Sood81]

If only I knew mentally what square of seven is...

[GLynLRocks]

@Sood81

7 square is 49

[Sood81]

@GLynLRocks lol I meant I don't know my tables anymore =D but thank you for the reply.

[jasmitsingh1993]

Really Amazing Stuff.

[stevensteven0123]

its great ut u need 2 practice alot to do it in 7 sec

[iBabbs]

OH MY GOD :O

[gorkibore]

what if it wasnt to the power of 2 ? what if it was 3

[nemesisurvivorleon]

the hell...

[Commentor987]

the square root of 4 is not 16

[mrkeipy]

I SENTENCE YOU ALL TO MATH JAIL FOR NO REASON WHATSOEVER

[valgardsons]

I like this guy

[masroorabbas]

wat is square of 110,120,130,140,150,..... using this tech.. it fails over there

[scorpiongio100]

@masroorabbas thay are too easy just compute 11 squared plus 2 zero'es

or 12 squared plus 2 zero'es etc

[TakingShapeCreations]

Amazing, i wish i had this back in high school

[The1DarkBoy]

wow this is sick man i swear thanks man

[SpiritOfTheWolf1995]

it's ridiculously dissapointing that i never learnt this in school

[thecitybaby]

wrong..totally..!!! but i l had learn might be different way to solve it...

(104)2=which is 2*104

and it is equal to"208"....doesn't it!!!!!

[AssassinJordi]

@thecitybaby 104² is not equal to 2 x 104.

104² = 104 x 104 = 10816

2 x 104 = 208

[thecreativegirl1]

THANK U ALOT

[matchcapo]

what about sq roots of number further away from 100 eg. 30, 40, 60 etc? whats the trick there?

[xcarolinebrown]

i hate math! thank you!

[jibbleliciousd00]

ahhhh math ,you are the language of the gods

[frontw1ng]

you are so great

[deepikabajaj13]

too gud..........although im v poor in maths n i hate it...........but i love these tricks...n nw maths too....thanks glad2teach. whether u teach smwhr?

[BizarreAvenir]

oh cool :D

[melindaFive]

I love this guy

[ahears1]

68 squared is umm... 68 - 32 = 36_ _ and 32 * 32 = 1024 which is 4624! HA I got it right! Thank you!

[charliepimpin]

what about 68 sqd?

[terriyakiboychino]

this proccess does not work for does not work for all square roots

[dilmister2]

yes if only it worked for all squared numbers

[jomartin12345]

what numbers is this valid for?? what range of numbers??

[jomartin12345]

square root of 4 is 2 not 16

[TakingShapeCreations]

@jomartin12345 ITS 4X4=16 SAME THING AS THE SQUARE ROOT OF 4.

[BoojaBeast]

how did you get 9216 for the last question ? I really don't get it ..

[dribler4]

Ofcourse... the guy teaching it is Indian :D lol jk ^^

thx man :D Got to show of infront of my teacher ;D

[glad2teach]

I am indeed an Indian. The techniques I am teaching are also from India. Our Number System was also designed in India ( Hindu Numerals ). I want Mathematics to be taught the original way. Just like computers use the Binary System for computing, we humans use the Decimal System ( Decimal is Base10 ). Unfortunately these days students are not being taught how to use the power Base10 to their advantage. Thus world over students is suffering and struggling with Mathematics.

[MyH96]

@glad2teach Yup, but you save us...

Honestly, I don't like math/maths..

But I like math now, and I like something like this instead those normal math (need to use calculator ==)

[darthmath2]

@glad2teach I understand you very much.

I am a mathematics tutor, and to be honest, I am very disappointed how they teach high school students there math.

Many of them dislike mathematics and I understand why. They do steps and skip steps without real purpose or knowledge but because their teacher told them too. Many of them cannot multiply -4*3, or do 3-7 without the calculator because their teacher didn't bother to teach them the rules. They were told just plug it in the calculator.

[gottaluvdae]

Can u be my real math teacher? Mine hates kids and doesnt no how to teach. SOS 8(

[13usernamechoosed]

thank you so much it help me alot in my examination